I was looking for this behemoth lens on the Nauticam port charts with no luck.

Any hint before I write them?

Thank you in advance

Davide,

Great lens—it is on my wish list for above water photography. I’d be surprised if there is a port/housing that would accommodate it, but I’m interested in finding out as well.

Good luck!

It's very long and has a 77mm diameter. A monster and doesn't exist a zoom gear.

A Panaleica 8-18 mm is a wiser choice.

To start with you'll need the 34.7mm N85-N120 adapter that's now discontinued I believe, then a lot of extension. Being 20mm equivalent, the 180mm dome is probably fine. It's heavier (690gr) than my Canon 8-15 which requires about 1800 gr of buoyancy to get near neutral with my setup. I think stick to the 8-18 or the OM 8-25mm 😂.

10 hours ago, Chris Ross said:

I think stick to the 8-18 or the OM 8-25mm

Even the 8-18 mm it's very expensive:

N85 to N120 55 mm Port Adaptor with Lens Control Knob > N120 Extension Ring 20 II > 180mm Optical Glass Wide Angle Port

And of course dedicated zoom gear. We are in the 2.700 euro range plus the lens cost. OMG

13 hours ago, Davide DB said:

Even the 8-18 mm it's very expensive:

N85 to N120 55 mm Port Adaptor with Lens Control Knob > N120 Extension Ring 20 II > 180mm Optical Glass Wide Angle Port

And of course dedicated zoom gear. We are in the 2.700 euro range plus the lens cost. OMG

Yeah, but M43 lenses are a bargain!😉

13 hours ago, Davide DB said:

Even the 8-18 mm it's very expensive:

N85 to N120 55 mm Port Adaptor with Lens Control Knob > N120 Extension Ring 20 II > 180mm Optical Glass Wide Angle Port

And of course dedicated zoom gear. We are in the 2.700 euro range plus the lens cost. OMG

I'm wondering if this adapter could be utilised:

Zen Underwater

PA-N85-SS60 Port Adaptor: Sea & Sea Ports on Nauticam Mir...

Zen Underwater Port Adaptor for Sea & Sea Ports on Nauticam Mirrorless Housings.  This adaptor was designed to be used in conjunction with the DP-170-SS to accommodate either the Zeiss 12mm E-Moun

It's an N85 - N120 S&S adapter you could use this a S&S extension and dome perhaps, the Nauticam 180mm dome has 10mm or so built in extension and i believe this adapter has 60mm extension. So the 8-18 you could get the 170mm dome, 25mm extension and the adapter for about $US1700. The OM 8-25 would need a little more extension. You'd need to check the extension required of course but it seems do-able. If you have a Nauticam dome already you could swap lug rings to use with this setup.